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Celotex  |  SKU: TB4025

25mm Celotex TB4025 PIR Insulation Board - 2400mm x 1200mm

£12.30 Ex VAT £13.23
£14.76 Inc VAT

Celotex TB4025 25mm Insulation board is a PIR insulation board with a slim profile and a low thermal conductivity of 0.022 W/mK.

Nationwide Delivery in 3-5 WORKING DAYS

  • £50 ex VAT Delivery
  • FREE DELIVERY OVER £500

Need a next-day or named day delivery? Call Us.


The 25mm Celotex TB4025 PIR insulation offers a versatile solution for reducing cold bridging in various applications, including floors, walls, and roofs. Designed with sustainability in mind, the Celotex Insulation boards feature a blend of eco-friendly blowing agents that boast a low global warming potential. Additionally, they have been proven to have zero ozone depletion potential (ODP), further underlining their environmentally-conscious design.

Choose Celotex insulation for a reliable, efficient, and eco-friendly insulation option for your building projects. These lightweight, rigid boards are not only easy to transport and handle but also straightforward to fit, ensuring a seamless installation process.

  • Can be used in a variety of applications – such as floor, wall, and roof.
  • Contain a combination of eco-friendly blowing agents with a low potential for global warming and zero ozone destruction potential (ODP).
  • Low-emissivity foil front.
  • BRE Green Guide rating A, which can be used in BREEAM assessments to show environmental performance.
  • Low-emissivity foil front that improves thermal performance in sealed cavity air spaces which lowers the U value.
Thickness: 25 mm
Length: 2400 mm
Width: 1200 mm
Coverage: 2.88 m²
R-value: 1.1 m²K/W
Thermal conductivity: 0.022 W/mK
Certification: BA 16/5352 BBA  17/5405
Country Origin: UK


The R-value denotes the resistance to heat flow – the higher the R-value the more insulating the product is.

  • Size
    2400mm x 1200mm
  • Coverage (m²)
    2.88
  • Thickness
    25mm
  • Material
    PIR

Do You Ship to My Address?

We deliver to most mainland UK addresses. If you are in one of the areas listed below and are unable to checkout, please give us a call to put together a custom quote.

Northern Ireland (BT), Isle of Wight (PO30-37), Isle of Man (IM), Scottish Highlands and Orkney Isles (PA, ML, EH, KA, G, KY, PH, DD, AB, IV, KW), Outer Hebrides and the Shetland Isles (HS, ZE) will incur additional charges and may also experience delivery delays.

How Much Will My Delivery Cost?

You can work out the cost of delivery on your order before checkout by heading to our Delivery Info page.

How Long Will Delivery Take?

We aim to deliver your items in 3 - 5 Working Days unless otherwise specified (eg - Sheds and Paving Kits). After you have placed your order, we will process your order and book a delivery day - which will then be sent to you via Email.

If have a specific request, please do give our team a call on 01156976800 and we will do our best to help.

What If I Need to Return Something?

If for any reason you wish to return your purchase, we will offer a refund or an exchange as long as this is requested within 14 days of receiving your order.

A manufacturer’s restocking charge may also apply on certain products such as non-stock items, which may be up to 30% of the purchase price, and you will be notified of this amount when you request a refund or exchange.

For full information visit our Returns Policy.

Celotex

25mm Celotex TB4025 PIR Insulation Board - 2400mm x 1200mm

£12.30 Ex VAT £13.23
£14.76 Inc VAT

The 25mm Celotex TB4025 PIR insulation offers a versatile solution for reducing cold bridging in various applications, including floors, walls, and roofs. Designed with sustainability in mind, the Celotex Insulation boards feature a blend of eco-friendly blowing agents that boast a low global warming potential. Additionally, they have been proven to have zero ozone depletion potential (ODP), further underlining their environmentally-conscious design.

Choose Celotex insulation for a reliable, efficient, and eco-friendly insulation option for your building projects. These lightweight, rigid boards are not only easy to transport and handle but also straightforward to fit, ensuring a seamless installation process.

Thickness: 25 mm
Length: 2400 mm
Width: 1200 mm
Coverage: 2.88 m²
R-value: 1.1 m²K/W
Thermal conductivity: 0.022 W/mK
Certification: BA 16/5352 BBA  17/5405
Country Origin: UK


The R-value denotes the resistance to heat flow – the higher the R-value the more insulating the product is.

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